STR-DG800
20
20
STR-DG800
4-6. BLOCK DIAGRAM — POWER SECTION —
POWER AMP
Q671-674
CURRENT
DETECT
Q675,676
RY240
RY2881
RY600
RY500
PRE DRIVER
IC600
SPEAKERS
IMPEDANCE
USE 8-16
Ω
R
L
FRONT B
L
SURROUND
SURROUND
BACK
CENTER
R
L
R
R
R-CH
R-CH
R-CH
R-CH
L-CH
R-CH
SL-CH
SBL-CH
R-CH
SR-CH
R-CH
SR-CH
R-CH
RY911
RY802,803
AC1
AC2
F2
+3.3V
(STBY)
+2.6V
+5V-1
-7V
+7V
TU+10V
RECT
D921-924
T902
POWER
TRANSFORMER
D925
AC IN
DETECT
Q914
D926
AC IN
~
OVERLOAD
DETECT
D675,Q677
POWER AMP
Q521-524
CURRENT
DETECT
Q525,526
-30V
-30V REG
Q250
B- SWITCH
Q221,228,235
RELAY
DRIVER
Q911
PRE DRIVER
IC500
PRE DRIVER
IC700
OVERLOAD
DETECT
D525,Q527
POWER AMP
Q471-474
CURRENT
DETECT
Q475,476
PRE DRIVER
IC400
OVERLOAD
DETECT
D475,Q477
RELAY
DRIVER
Q240
RELAY
DRIVER
Q600
RY700
TM602
RY400
RELAY
DRIVER
Q700
RELAY
DRIVER
Q400
PROTECTOR
D201-204
Q200-202,255,256
F1
-VCC
+VCC
-30V
IC210
-B-1
-B
+3.3V
IC1901
+5V-2
IC1001
IC1904
IC1902
-15V
+15V
IC260
IC265
IC1031
+B
+B-1
INVERTER
Q210
R-CH
R-CH
R-CH
-B-1 +B-1
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
RECT
D801,802
RECT
D865
RECT
D866
T901
POWER
TRANSFORMER
TM2880
R
FRONT A
L
R-CH
TM600
J4086
PHONES
HP-RY
SB-RY
FRONT RY
REAR-RY
C/SB RY
HP DETECT
HP-RY
HP DETECT
SB-RY
FRONT-RY
REAR-RY
C/SB RY
D1110
D1108
D1107
D1111
TM601
C-CH
REAR RY
POWER AMP
Q721-724
CURRENT
DETECT
Q725,726
OVERLOAD
DETECT
D725,Q727
-B-1 +B-1
-B-1 +B-1
-B-1 +B-1
RELAY
DRIVER
Q500
RELAY
DRIVER
Q809
R861
R290
D290
D291
R860
F902
US,CND MODEL
EXCEPT
E2
MODEL
F901
S901
-3
-2
-1
J911
AC OUTLET
R851
R852
D251
RELAY
SWITCH
F904
EXCEPT TW
MODEL
E2 MODEL
S901
240V
220V
120V
VOLTAGE
SELECTOR
JW809
EXCEPT E2
MODEL
B+ SWITCH
Q220,225
RELAY
DRIVER
Q2880
• Signal path
: TUNER (FM/AM)
• R-ch is omitted due to
same as L-ch.
• Abbreviation
CND : Canadian model
E2 : 120V AC area in E model
TW : Taiwan model